Using Dynamic Blocks and Tables - AutoCAD 2011 and AutoCAD LT 2011: No Experience Required - page 462

the conversion factor needed to convert square inches into square feet,
divide 1 by 1,000,000 and you'll come up with 0.000001.
1
2
3
FiGuRE 9.27 The Field dialog box after selecting the polyline and
choosing the property and format
12. Enter 0.000001 in the Conversion Factor field. To identify the units,
enter M2 in the Suffix field.
Be sure to place a space prior to the M to ensure a gap between the
suffix and the calculated area. Your Additional Format dialog box
should look like Figure 9.28.
13. Click OK to close the Additional Format dialog box, and note that the
Preview section in the Field dialog box now shows the correct value
of 26.20 M2, as you can see in Figure 9.29.
14. Click OK to close the Field dialog box and return to the Edit
Attributes dialog box. The Area Of Room value is now shown with a
gray background, as you can see in Figure 9.30, to identify it as a field
rather than a text element.
15. Click OK to insert the A-ROOM-INFO block into the drawing in
the living room. The room label is the only visible attribute (see
Figure 9.31). You set the other two attributes to be invisible.